6847 Video Display Generator

Pinout

GND --- 1 --6847--
VDG
40 <-- D7
D6 <-- 2 39 <-- CSS
D0 <-- 3 38 --> !HS
D1 <-- 4 37 --> !FS
D2 <-- 5 36 <-- !RP
D3 <-- 6 35 <-- !A/G
D4 <-- 7 34 <-- !A/S
D5 <-- 8 33 <-- CLK
CHB <-- 9 32 <-- INV
CLKB <-- 10 31 <-- !INT/EXT
CLKA <-- 11 30 <-- GM0
!MS --> 12 29 <-- GM1
A5 <-- 13 28 --> Y
A6 <-- 14 27 <-- GM2
A7 <-- 15 26 --> A4
A8 <-- 16 25 --> A3
VCC <-- 17 24 --> A2
A9 <-- 18 23 --> A1
A10 <-- 19 22 --> A0
A11 <-- 20 21 --> A12

Timing

30 Frames / second
525 Lines / frame (interleaved)
15750 Lines / second (interleaved)
63.492 µs / line
   
  Clock rate (35/44 * 4.5 MHz)
   
   

Colour Palette

Long cycle applies to CG1, RG1, RG2, RG3 modes. !A/G is high (i.e. Graphic), 8 pixels per access.

Notes

Long cycle applies to CG1, RG1, RG2, RG3 modes. !A/G is high (i.e. Graphic), 8 pixels per access.
Short cycle applies to CG2, CG3, CG6, RG6 modes. !A/G is high (i.e. Graphic), 4 pixels per access.